MACK RS 1975: SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR
NHTSA Campaign ID Number: 76V006000
| Make | Model | Year |
|---|---|---|
| MACK | RS | 1975 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1976-05-13 | 1976-01-13 | 1979-10-12 |
Production Dates: 1974-06-01 - 1978-03-01
Manufacturers Involved: Mack Trucks, Inc.
Component: SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR
Potential Number Of Units Affected: 350
Report Initiator: MFR MFR Report
Regulation Part Number: 571
Federal Motor Vehicle Safety Standard Number: 121
MACK CAMPAIGN NO SC072.TRUCKS EQUIPPED WITH EATON SKID CONTROL SYSTEM ANDROCKWELL INTERNATIONAL FF931 OR FL931 W FRONT AXLES WITH ALUMINUM WHEEL HUBS.POSSIBILITY THAT FULL ADJUSTMENT OF THE WHEEL SPEED SENSOR CANNOT BE OBTAINEDWITH THE PRESENT EATON WHEEL SPEED ROTOR.IF THIS RESULTS IN INTERFERENCEBETWEEN THE ROTOR AND SENSOR ON ONLY ONE WHEEL OF THE FRONT AXLE AND THEINTERFERENCEIS SUFFICIENT TO DAMAGE THE SENSOR, THEN ANTI-WHEEL LOCK CAPABILITYWILL BE LOST ON THE FRONT AXLE AND THE ANTI-WHEEL LOCK WARNING LIGHT INDICATORWILL ACTIVATE, ALERTING THE DRIVER.HOWEVER, IN THE EVENT SENSOR-TO-ROTORINTERFERENCE ON BOTH WHEELS OF THE FRONT AXLE, AND CAUSES DAMAGE TO BOTHSENSOR, THE ANTI-WHEEL LOCK CAPABILITY WILL BE LOST ON THE FRONT AXLE, BUT THEANTI-WHEEL LOCK INDICATOR WARNING LIGHT WILL NOT BE ACTIVATED.ABSENCE OF THEANTI-LOCK CAPABILITY COULD RESULT IN IMPAIRED VEHICLE CONTROL SHOULD THE DRIVERUNDERTAKE A PANIC STOP IN SLIPPERY ROAD CONDITIONS.'CORRECT BY INSPECTING ANDREPLACING EATON WHEEL ROTORS WITH IMPROVED PARTS AND REPLACE DAMAGED SENSOS'.
